Means for controlling the traverse of yarn guides on spinning machines



Dec. 1924 1,517,746

E. E. NOWELL MEANS FOR CONTROLLING THE TRAVERSE OF YARN GUIDES ONSPINNING MACHINES Filed March 19, 1924 2 Sheets-Sheet 1 H Low/m E.NMELLv E. E. NOWELL MEANS FOR CONTROLLING THE TRAVERSE OF YARN GUIDES ONSPINNING MACHINES v Filed March 19 1924 2 Sheets-Sheet 2 \nvenior:EDWARD E. NDWELL Patented Dec. 2, l 1924.

UNITED STATES PATENT OFFICE.

EDWARD E. NOWELL, 0F READING, PENNSYLVANIA.

MEANS FOR CONTROLLING THE TRAVERSE OF YARN GUIDES ON SPINNING MACHINES.

Application filed March 19, 1924.

To all who-m it may concern Be it known that I, EDWARD E. NOWELL, acitizen of the United States, residing at Reading, in the county ofBerks and State of Pennsylvania, have invented certain new and usefulImprovements in Means for Controlling the Traverse of Yarn Guides onSpinning Machines, of which the following is a specification, referencebeing had to the accompanying drawings.

This invention relates to the builder motions of spinning machinery, andparticularly to means for forming a preliminary winding or bunch uponthe bobbin or cop prior to the formation of the main or service winding,the bobbins or cops so wound being used in the shuttles of automaticfeeler replenishing or feeler looms.

One of the objects of the invention is to improve upon the constructionillustrated in my Patent #1, 174:,54l4t, granted November 20, 1923, onmeans for controlling the traverse of yarn guides on spinning machines.

A further object is to simplify the construction therein illustrated andto do away with the use of the cam shaft, drum or pulley and the use ofthe two chains or flexible connections leading thereover to the rockersof the spinning-frame.

A still further object is to provide for an adjustment of the bunchlaying mechanism so that the length of the traverse for forming thebunch may be varied.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure1 is an elevation of a portion of a spinning frame and the buildermotion thereof, showing my improvement applied thereto Figure 2 is anenlarged elevation of a portion of the builder motion and myimprovement;

Figure 3 Figure 1;

Figure 4 is a horizontal section through the drum 32 and showingaportion of the builder motion in plan View;

Figure 5 is a cross sectional view on the line 5 5 of Figure 4:;

Figure 6 is a like View to Figure 5 but is a section on the line 33 ofshowing the position of the pin 37 at the time that the pin enters thesocket;

Serial No. 700,272.

Figure 7 is a sectional view through a bobbin and showing the bunchformed thereon by my mechanism;

Referring to these drawings, A designates a spindle rail supported onthe usual frame, and on this frame are mounted the usual rotatablespindles B. Coacting with these spindles is the vertically reciprocatingring rail C provided with rings D, one for each spindle. The spindlerail is reciprocated by means of lifter rods E which engage with thering rail, and these lifter rods are operated by means of a plurality ofrocker arms G which have, generally speaking, the form of bell cranklevers, thereby providing upwardly extending arms H and horizontallyextending arms, the latter extending beneath and bearing against thelower ends of the lifter rods E. The vertically extending arms H of allof the lifter rods are connected by connecting rods I- in the usualmanner and these bell crank levers G or rockers are each mounted upon asuitable bearing J. The arms G may or may not be weighted as occasionsdemand. So far as I have described, these parts are common to allbuilder motions of spinning frames.

These rocker arms G are operated by means of a builder action and I haveillustrated a common form of such action, in which 11 is the builder armpivoted at 12 and carrying at its inner end a drum 13. This drum isrotated in one direction by means of a worm 14 mounted upon a pick shaft15 carrying upon it a pick wheel 16 adapted to be turned one step uponthe upward movement of the outer end of the arm by means of a pawl 17and the usual vertically disposed rod 18 which passes through the frameof the machine and which is provided with a stop 19 which, when itengages the frame, depresses the outer end of the pawl and turns thepick wheel a predetermined amount to rotate the drum 13 in an unwindingdirection. The builder arm is illustrated as oscillated by means of atrilobed cam 20. I have illustrated a trilobed cam, but I do not wish tobe limited thereto as a cam of any form might be used.

From the drumy13 passes a chain 21 which, in my embodiment of theinvention, passes over a pulley 22 mounted upon a bracket 23 on thelower rail A of the frame of the machine. This chain 21 after passingover this pulley 22 extends to and is connected with the upper end ofthe upwardly extending arm H. For this purpose the arm H is provided atits upper end with a head it having a curved-upper surface, at one endof which av hook is provided engaging in the links of the chain. I donot wish to be limited to this particular manner of connecting the chain21 to the upper end of the arm H, as other means might be used for thispurpose. All of these parts so far described are those commonly found inbuilder motions and in spinning machines for the purpose of causing thetraverse of the ring rail and form no part of my invention.

Mounted upon a bracket 24;, which in turn is mounted upon the lower railA, is a fixed shaft 25 which extends out laterally from the bracket andwhich is detachably engaged with the bracket 24 in any suitable mannerand held from rotation. Mounted upon the end of this shaft 25 is a fixedcollar 26 also held fnom rotation with relation to the shaft by means ofa set screw or any other suitable device.

Mounted upon the shaft 25 is an arm 27, the inner end of this arm beingenlarged to loosely embrace the shaft and oscillate there on and theouter end of the arm carrying a roller 28 which bears upon the upperface of the chain 21. A coiled spring 29 loosely surrounds the shaft 25and at one end this coiled spring is engaged with the collar 26 and atits opposite end is operatively engaged with the arm 27. This coiledspring resists the movement of the arm 27 in one direction and if afterthe arm 27 has been carried in this direction for a certain distance thearm 27 be released, the coiled spring will return the arm to its normalor initial position. It will be noted from Figure 2 that the extremityof the arm is provicled with two openings 30 disposed at differentdistances from the end of the arm so that the shank 31 of the roller maybe shifted along the arm 27 and disposed in either one of theseapertures 30 to thus adjust the stroke which the roller will make andthus vary the range of preliminary winding on the bobbin.

Mounted loosely upon the shaft 25 is a drum, designated generally 32.This drum is formed by one side wall and an annular peripheral wall anda second side wall 33 attached to the main body of the drum in anysuitable manner. Forming part of this drum, that is movable therewithbut preferably detachable therefrom, is an arm 34 which at one end isformed to embrace the shaft and at its outer end extends beyond the drumand is engaged with the drum by means of a screw 35. The extremity ofthis arm 34 is connected by means of a rod 36 to the builder arm 12.This rod 36 is pivotally connected to the arm 34, and obviously when thebuilder arm is oscillated. an oscillating motion is given to the drum32, and if the drum 32 be connected to the arm 27 it is obvious that anoscillatory motion will be given to the arm 27 and the roller 28 willalternately force down ard on the chain 21 or move upward and permit thechain to slacken.

For the purpose of engaging the arm 27 to the drum 32 while the hunch isbeing built and automatically disengaging the arm 27 from the drum 32 soas to cause the arm. 27 and roller 28 to become inoperative, I haveprovided mechanism substantially that shown, described and claimed in myPatent #1,474,544;, which mechanism includes a locking pin 37, the innerend of which is enlarged and formed with an interrupted screw-thread,while the outer end rela tively reduced and fits within an aperture 38in the arm 27. This pin 37 is thus rigidly engaged with the arm 27 andmoves with this arm. During the formation of the. bunch, that is duringthe initial movements of the builder arm 12, this pin 37 locks the armto the drum, but as the builder arm oscillates and as the drumoscillates, this pin 37 is little by little projected until iteventually releases its engagement with the screw-threaded socket 41, aswill be later described, whereupon the arm 27 flies back to its initialposition and remains in this initial position until the pin 36 and thescrewthreaded socket in which it is engaged are again disposed inregistry.

It is to be understood that the spring 29 not only resists oscillationof the arm 27 in one direction and acts to urge it to an initialposition, but this spring also acts to urge the arm 27 longitudinallyalong the shaft 25 and against the drum and that as the pin 37 is movedoutward by engagement with the screw-threads of the socket, as will belater described, this arm 27 is moved outward along the shaft againstthe action of the spring 29, and that as soon as the pin 37 again comesinto position opposite the socket in the drum, the spring 29 will THHSCthe arm 27 to move inward and the pin :37 to enter the socket in thedrum. The mechanism whereby this pin is caused to unscrew from itsengagement with the drum is as follows Loosely mounted upon the shaft 25and disposed within the hollow drum 32 is a gear wheel 39. Disposed alsowithin the drum and mounted in bearings therein is the shank 40 of asocket member 41. This socket member has its outer end reduced so as tofit within the section 33 of the drum and rotate in this section and isinternally screw-threaded, as at 42. The shank 10 is reduced at the endopposite the socket for insertion within a suitable bearing recess inthe end of the drum, and mounted upon this shank for rotation therewithis a pinion 43 which engages with the gear wheel 39. Keyed upon theshaft 25 and disposed within the hollow drum and adjacent to the section33 is one member 44 of a clutch, this member having clutch teeth 45. Thegear wheel 39 upon one face is formed with clutch teeth 46 which coactwith the clutch teeth 45.

It is obvious that when the clutch teeth 45 and 46 are in engagementwith each other, the gear wheel 39 will be held from rotation but upon areverse movement of the drum the clutch teeth of the gear wheel willslip over the clutch teeth 45 and the gear wheel 39 will rotate with thedrum by reason of the spring 47 which is coiled loosely around the shaft25 and bears at one end against the end of the drum and at the other endagainst the gear wheel 39. Thus the gear wheel 39, when the drum 32moves in a direction to carry the arm 27 upward, is held from rotationby the clutch teeth 45 on member 44 which is fixed to the fixed shaft.Upon a reverse movement of the drum, however, that is a movementcarrying the arm 27 downward, the gear wheel 39 is free to revolve. Thusupon an upward movement of the arm 27, the pinion 43 will rotate by itsmeshing engagement with the gear 39 but upon a downward movementof thearm the pinion 43 and the gear wheel 89 will be locked to each other andwill rotate together so that there will be no rotation of the interiorlyscrew-threaded socket 41. This intermittent movement of the interiorlyscrew-threaded socket causes the step by step upward movement of the pin37, this pin being fast on the arm 27 carrying the arm up with itagainst the action of the spring 29. As before stated, until the pin 37has entirely escaped from engagement with the socket and the minute thisoccurs, the spring 29 acts to carry the arm 27 upward independently ofany movement of the drum and then the arm 27 has become totallydisengaged from the drum. The drum then operates but without any effectand the regu-' lar oscillation of the builder arm 12 is then used tocause the traverse of the ring rail up and down the spindle B.

This traverse of the ring rail causes the yarn to be laid in its regularfashion upon the bobbin, while the relatively short traverse of the ringrail causes the formation of the bunch. It will be understood that inthe normal operation of this mechanism, as the arm 12 rises the chain 21is slackened and the weight on the arm G causes the rise of the ringrail supporting the rods E. Upon a downward movement of the arm 12, thechain 21 is tightened and this causes a downward movement of the rods Eand the downward movement of the ring-rail. Thus the rin rail is causedto traverse up and down the length of the service traverse of thebobbins. As the chain is paid out by the action of the pick wheel 16,the traverse becomes higher and higher up the spindle, but when my bunchforming mechanism is in operation, an upward movement of the arm 12which would normally cause the chain 21 to slacken up and permit thefull rise of the rods E is counteracted by the slack in the chain beingtaken up by the downward movement of the arm 27 and of the roll 28 whichbears upon the top of the chain. When the pin 87 has been fully shiftedout of its socket, the arm 27 springs upward to carry the roller 28entirely out of the way of the chain 21 and then the regular buildermotion comes into action to cause the laying of the service yarn.

When the bobbin has been completely wound and is to be doffed, the ringrail is pulled down by the operator and the lifting rod E and the rockerGr move down and when this is being done the vertical arm H whichcarries the chain hook moves in the direction of the drum 32 and thusthe chain 21 moves downward with the builder arm 11. The downwardmovement of arm 11 causes the drum or disk 32 to move in the samedirection as the chain 21, or in other words to turn in acounterclockwise direction. lVhen the builder arm reaches the floor, thechain 21 becomes slack and the drum or disk has turned so as to carrythe socket 41 opposite the pin 87. As soon as the socket 41 comesopposite the pin 37, the spring 29 will urge the arm 27 inward and thepin will slip into the socket and the parts are ready to repeat theoperation. When the pin 39 is being inserted into the socket 41, thetwisting action of the spring 29 keeps the plain side of the pin 89against the thread in the socket, (see Figure 6) thus permitting the pinto slip into the socket easily, the plain side of the pin restingagainst the thread of the socket until the ring rail is let up, and whenthis is done the lifting rod E and the rocker G will raise and this willcause a pull on the chain 21. Then as the gear and socket revolve, thepin 39, or rather its threaded portion, follows the thread of the socketuntil the pin has entirely worked out from the socket and the hunch iscompleted. Then the operation heretofore described is repeated.

The general operation of this mechanism is as follows :-At the start ofthe winding, the chain 21 is wrapped entirely up on the chain wheel 13.The chain 21 is. therefore, taut and the ring rail is lowered as fardownward on the bobbins as possible. As the cam 20 operates it will givethree oscillations'to the builder arm 11 for each revolution of the cam.Upon each downward movement of the builder arm, the pick pawl will actupon the worm 14 to cause a slight rotation of the drum 13 or roller togive a slight release to the chain21, and thus if my mechanism was notused the ring rail would at each reciprocation move a little higher upon the bobbin, but this release of the chain is compensated for, asbefore stated, by the coincident depression of the roller 28 which takesup the slack in this chain so that the ring rail as a result isreciprocated upward and downward through a relatively small range justenough to lay the bunch and the number of screw-threads on the pin 87and upon the screw-threaded socket are just sufficient to cause theautomatic throwing out of operation of the arm 27 and the roller whenthe bunch has been completed.

I am aware that mechanism has been provided for the purpose ofautomatically con trolling the traverse of the ring rail but thesemechanisms are relatively costly and occupy considerable room. My deviceis so simple that it may be cheaply made and occupies only a space ofabout 2 x 4'. This bunch mechanism will leave about three or four yardsof filling on the bobbins compared with forty or fifty yards left on thebobbins by the ordinary builders. It is entirely automatic and is'easilyset while the bobbins are beingdoffed. It is to be seen that while thisform of mechanism is entirely practical and thoroughly effective, yetthat the principle of the invention may be embodied in various forms,and I do not, therefore, wish to be limited to the constructionillustrated, as other embodiments of the invention within the terms ofthe appended claims might be devised.

1. In a spinning machine, the combination with spindles, a verticallyreciprocatable ring rail operatively connected therewith, a rockeroperatively connected to the ring rail, a builder motion, a flexibleconnection extending from the builder motion to the rocker, of means forlimiting the extent of movement of the ring rail for a predeterminedperiod to thereby form a bunch upon each spindle comprising anoscillatable member operatively connected to the builder motion andoscillated thereby, said member having an arm provided with a rollerengaging over the flexible connection,

I said arm being normally operatively connected to the member tooscillate therewith, and means operated by the reciprocation of saidmember acting after a predetermined number of oscillations to detachsaid arm c from its engagement with the member to tively connected tothe ring rail, a builder motion, a flexible connection extending fromthe builder motion to the rocker, of means for initially limiting theextent of reciprocation of the ring rail to thereby form a bunch uponthe spindles comprising an oscillatab'le member having an arm extendingin one direction and operatively engaged by the builder motion to causethe elevation of the arm upon an elevation of the builder motion, asecond arm attached to the member and extending out in an oppositedirertion from the first named arm and having a projection engaging overthe flexible connection and adapted to take up slack in the flexibleconnection as the builder motion is raised, and means acting after apredetermined number of oscillations of the builder motion to releasesaid second named arm from its engagement with the said member.

In spinning machinery, the combination with spindles, a verticallyreciprocatable ring rail coaeting therewith, a rocker operativelyconnected to the ring rail, a builder motion, a flexible connectionextending from the builder motion to the rocker, of means for limitingthe extent of reciprocation of the ring rail for a predetermined periodto thereby form an initial bunch upon the spindle comprising a fixedshaft, a member oscillatably mounted upon the shaft, an arm looselymounted upon said shaft and having a projection adapted to engage overthe flexible conneetion, an operative connection between said member andthe builder motion whereby as the, builder motion shifts to slacken theflexible connection the member will oscillate in one direction, andmeans carried by said member normally engaging the arm with said memberfor movement therewith but automatically disengaging the arm from saidmember after a predetermined number of oscillations of said member.

4. In spinning machinery, the combination with spindles, a verticallyreriprocatable ring rail coacting therewith, a rocker operativelyconnected to the ring rail, a builder motion, a flexible connectionextending from the builder motion. to the rocker, of means for limitingthe extent of reciprocation of the ring rail for a predetermined periodto thereby form an initial bunch upon the spindle comprising a fixedshaft, a member oscillatably mounted upon the shaft, an arm looselymounted upon said shaft and having a projection adapted to engage overthe flexible connection, an operative connection between said member andthe builder motion whereby as the builder motion shifts to slacken theflexible connection the member will oscillate in one direction, a springurging said arm toward the member and urging the arm upward, and meanscarried by said member normally engaging the arm with said mem ber formovement therewith but automatically disengaging the arm from said memher after a predetermined number of oscillations of said member.

5. In a spinning machine, spindles, a vertically reciprocatable ringrail coacting therewith, a rocker operatively connected to the ringrail, means urging the ring rail upward, a builder motion including avertically oscillatable arm, a flexible connection extending from saidarm to said rocker and permitting the ring rail to move upward under theaction of said urging means as the arm of the builder motion moves upward, means for limiting the extent of reciprocation of the ring railfor a predetermined period to thereby form a bunch upon the bobbincomprising an oscillatable drum, an operative connection between saiddrum and the arm of the builder motion, an arm carried by the drum andhaving a projection engaging over the flexible connection, the arm beingmounted for movement toward and from the drum, and means within the drumand actuated by the oscillations thereof whereby said arm may be shiftedout of engagement with the drum after the drum has oscillated apredetermined number of times.

6. In a spinning machine, spindles, a vertically reciprocatable ringrail coacting therewith, a rocker operatively connected to the ringrail, means urging the ring rail upward, a builder motion including avertically reciprocatable arm, a flexible connection extending from saidarm to the rocker, a pulley over which the flexible connection passes,the connection between said pulley and the rocker extendingapproximately horizontally, a shaft, a drum loosely mounted upon theshaft and operatively connected to the arm of the builder motion wherebythe drum may be oscillated, an arm loosely mounted upon the shaftadjacent the drum and extending away from the builder motion, said armhaving a projection adapted to engage over the flexible connection, aspring urging said arm toward the drum and resisting the movement of thearm from a normal position, and means disposed within the drum andcarried thereby, causing the operative disengagement of the arm from thedrum after the drum has oscillated a predetermined number of times, thespring then acting to lift the arm out of engagement with the flexibleconnection.

7. In a spinning machine, spindles, a ver tically reciprocatable ringrail eoacting therewith, a rocker operatively connected to the ringrail, means urging the ring rail upward, a builder motion including avertically movable arm, a flexible connection extending from the buildermotion to the rocker, means for limiting the extent of rea projectionadapted to engage over the flexible connection, a spring surrounding theshaft, one end of the spring being fixedly mounted and the opposite endof the spring engaging the arm and acting to urge the arm toward thedrum and resist oscillation of the arm, the drum having a socket and thearm having a member normally engaging in said socket whereby the drumand arm shall have coincident oscillation, and means disposed within thedrum for automatically shifting said last named member out of itsengagement with said socket to permit the spring to lift the last namedarm out of its operative engagement with the connection.

8. In a spinning machine, spindles, a vertically reciprocatable ringrail, a rocker operatively connected thereto, a builder motion includingan arm, a flexible connection extending from the builder motion to therocker, means urging the rocker in a direction to lift the ring rail, incombination with means for limiting the extent of reciprocz tion of thering rail for a predetermined initial period comprising a fixed shaft,an oseillatable member mounted upon the shaft and operatively connectedatone point in its periphery to the arm of the builder motion. forreciprocation thereby, an arm normally engaging said member foroscillation therewith and ext-ending in an opposite direction to thepoint of connection of the member to the builder arm, the second namedarm having a laterally projecting roller engaging over the flexibleconnection, a spring urging said second named arm toward the member andalso acting to resist depression of the second named arm, and meanscarried by said member and actuated by the oscillations thereof actingto cause disengagement between the second named arm and said memberafter a predetermined number of oscillations of the member and thebuilder arm but automatically returning the second named arm intoengagement with the member when the builder motion arm is fullydepressed. to permit dofling of the bobbins.

9. In means for controlling the traverse of spinning rings, a ring railshifter, a builder action operatively connected to the shifter, meansoperated by the builder action for giving an oscillation to the ringrail shifter equal to the amplitude of movement of the builder action,and means operated by the builder action for initially limiting theextent of oscillation of the shifter during lib a predetermined period,said means being rendered automatically inoperative after the builderaction has made a predetermined number of oscillations.

10. In means for controlling the traverse of spinning rings, a ring railshifter, a builder action, a flexible connection between the builderaction and the ring rail shifter, an oscillatable member operativelyconnected with the builder action to be oscillated thereby, an armcoacting with the member and having a projection adapted to engage overthe flexible connection and when the member is oscillated in onedirection by the builder action to depress the flexible connection,means for rendering the arm active during a predetermined period andthen automatically rendering it inoperative comprising a pin mounted onsaid arm, a menr her having a socket to receive said pin, means urgingthe arm against the member to thereby yieldingly hold the pin in saidsocket, said means resisting a downward movement of the arm, and meansacting as the member is oscillated to cause the pin to shift little bylittle out of the socket to thereby detach the arm and the member fromeach other.

11. In means for controlling the traverse of spinning rings, a ring railshifter, a builder action, a flexible connection between the builderaction and the ring rail shifter, an oscillatable member operativelyconnected with the builder action to be oscillated thereby, an armcoacting with the member and having a projection adapted to engage overthe flexible connection and when the member is oscillated in onedirection by the builder action to depress the flexible connection,means for rendering the arm ac tive during a predetermined period andthen automatically rendering it inoperative comprising a pin carried onthe arm, the member having a screw-threaded socket in which said pinengages, the socket being larger than the pin and the pin havingscrew-threads on one face only, and a spring urging the arm against saidmember and yieldingly resisting downward movement of the arm.

12. In a spinning machine, the combination with the spindles thereof, avertically reciprocatable ring rail coacting therewith, a rockeroperatively connected to the ring rail, means urging the ring railupward, a builder motion, a flexible connection extending from thebuilder motion to the rocker, means for limiting the extent of reciprocztion of the ring rail for a predetermined period whereby to form a bunchupon the bobbins comprising a fixed shaft, a hollow drum mounted thereonfor oscillation, the drum having operative connection to the builderaction whereby the drum may be oscillated, an arm loosely mounted uponthe shaft and extending away from the builder motion, a spring urgingsaid arm toward the drum and resisting the downward movement of the arm,said arm having :1 laterally projecting roller engaging over said.flexible connection and adapted to depress it as the arm is moveddonuiward, means for opcratively engaging the arm with the drum for aPIGClGtQIIIllDQtl number of oscillations of the drum and thendisengaging the arm therefrom comprising a scrmv-thr adcd pin mountedupon the arm, an interh'n'ly srrewthreaded socket carried by the framewith which said screw-threaded pin is adapted to engage, and meansactuated by the oscillal ion of the drum for urging saidsci-inv-tln'cadcd socket in a direction to disengage the scrcwthreadedpin therefrom to thcrcby pcrn'iit the lifting of the arm to aninoperative position and out of engagement with said connection.

13. In a spinning machine, the combination with the spindles thereof, avertically reciprocatable ring rail eoacting thcrcwith, a rockeroperatively connected to the ring rail, means urging the ring rail.upward, a builder motion, a flexible connection extending from thebuilder motion to the rocker, means for limiting the extent ofrcciprocation of the ring rail for a predetermined period whereby toform a bunch upon the bobbins comprising a fixed shaft. a hollow drummounted thereon for oscillation, a drum having operative connection tothe builder motion whereby the drum may be oscillated, an arm looselymounted upon the shaft and extending away from the builder motion, aspring urging said arm toward the drum and resisting the downwardmovement of the arm, said arm having a lalcraltv projectingrollerengaging over said flexible connection and adapted to depress it as thearm is moved downward, means for opcratively engaging the arm with thedrum for a predetermined number of oscillations of the drum and thendisengaging the arm therefrom comprising a pin carried by said arm, aninteriorly screw-threaded membcr carried by the drum into which said pinnormally engages, a gear wheel loosely supported within the drum andoperatively cugaging said member. said gear whccl having a clutch face,a clutch member mounted in the drum but held from rotation therewith andhaving clutch teeth engagmible with the last named clutch face. and aspring urging the clutch members into on gagement with each other.

In testimony whereof I hereunto aflix my signature.

EDlVARD E. NOWELL.

